package com.horay.springbootdemo.response.body.advice.configuration;

import com.horay.springbootdemo.common.result.ResultBody;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * 统一返回配置
 *
 * @author heyingcheng
 * @date 2019/8/31 9:11
 */

@EnableWebMvc
@Configuration
public class UnifiedReturnConfig {

    @RestControllerAdvice("com.horay.springbootdemo.response.body.advice.api")
    static class ResultBodyResponseBodyAdvice implements ResponseBodyAdvice<Object> {
        @Override
        public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
            return true;
        }

        @Override
        public Object beforeBodyWrite(Object body, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {
            if (body instanceof ResultBody){
                return body;
            }
            ResultBody<Object> resultBody = new ResultBody<>(body);
            return resultBody;
        }
    }
}
